Granted, most of these lights come with a mount, but if yours breaks, or just doesn't work well with part of your bike, this is a great alternative to going out and buying a new light. All you have to do is attach the light to a wooden clothespin with two zip ties, and clip it to your bike. Bike Hacks demoes the process by sticking it on a luggage rack on the back of a bike, but the placement will obviously vary from model to model. The upshot of this hack is that you can transfer the light easily between multiple bikes as necessary, making this great for sharing. Be sure to check out the source link for the walkthrough.